Section two the evaluation of biocompatibility of the acellular dermal matrix by the method of cell culture. the new born rat ' s epdermic cells were cultured with the acellular dermal matrix together as experiment group, while the epdermic cell were cultured simply as control. 24 hours later, under the invert microscope, the epidermic cells anchored well and transparent flat cells were observed in both groups. 7 days later, both cultured cells were taked out and fixed in 95 % ethanol, stained with hematoxylin and were observed under light microscope. many cleaved cells were observed in both groups. during cell culture, no pathogenic microganism was observed. so we considered the acellular dermal matrix was aseptic and had good biocompatibility. section three subdermal implantation of the acellular dermal matrix. 24 rats were used in the experiments. a piece of acellular dermal matrix ( 1. 5 x 1. 5cm2 ) was implanted beneath the dorsum skin flaps of each rat, 1 week, 2 weeks, 3 weeks and 4 weeks after implantation, 6 pieces of acellular dermal matrix were harvested and the size of implanted acellular dermal matrix were measured, the sections were used for he staining and observed under light microscope. the result were as folio wing : 1 - 2 weeks after implantation, the acellular dermal matrix began to adhere to the tissue around and turned red gradually ; 3 - 4weeks after implantation, the acellular dermal matrix adhered closely to the tissue around and could be recognized easily, 1 - 3 weeks after implantation, the size of implanted acellular dermal matrix had no statistical difference ( p > 0. 05 ). 4 weeks after implantation implanted acellular dermal matrix contracted ( p < 0. 05 ). under light microscope, l - 2weeks after implantation, the fibroblast cells infiltrated the acellular dermal matrix and a small amount endothelial cells of vessel and lympho - histiocytic cells infiltrated the acellular dermal matrix. 3 - 4 weeks after implantation, infiltrating blood vessels were evident. so we think that the acellular dermal matrix had low immunological reactions and could induce the infiltration of fibroblast macrophage cell and the endothelial cells of vessel
結果如下:皮下包埋卜周者,無細胞真皮基質漸與周圍組織粘附,顏色由蒼白轉紅;皮下包埋3周者,無細胞真皮基質與周圍組織緊密枯附,盾晰葉辯;術后卜周,包埋的基質面積變化較包埋前無統計學差異o川0引,術后4周包埋的無細胞真皮基質面積較包埋前縮小j刃刀5 ) 。光鏡下術后卜周,宿主的淋巳組織細胞、成
纖維細胞浸入生長,釉附在膠原
纖維上,少量血管內皮細胞浸入基質;術后34周,無細胞真皮基質內較多的血管形成,故可認為無細胞真皮基質免疫原性低,能誘導宿主的成
纖維細胞、巨噬細胞浸入生長,為一種新型的真皮替代物。第四部分無細胞真皮基質與自體斷層皮片復合移棺的研究, sd大鼠10隻,在其
背部卜方造成全厚皮膚缺損的創面
Chitosan is the product of partial deacetylation of chitin they are the second most abundant polysaccharides in nature, comprising the horny substance in the exoskeletons of crabs, shrimp, and insects as well as fungi
背景和目的幾丁質是由n -乙酰葡萄糖胺組成的多糖,它是世界上除
纖維素之外含量最豐富的天然多聚物。
Abstract : selective mechanisms exist in organism and biosphere, which select the cells with less dna injuy and reproduces them. there are two models ; mechanisms 1 and mechanisms 2, represented respectively b bacteria and mechanolytes of human beings. cells with mechanisms 1 ( e. g. bacteria, generative cells, cancer cells ) can reproduce infinitely, while somatic cells can not. there are deep - going reasons behind the two categories of selective mechanisms. the canceration of the cells is a degenerating process from mechanisms 2 to mechanisms 1
摘要生物界存在一類篩選機制,它將dna損傷較小的細胞篩選出來,產生後代.主要有兩類模式機制1和機制2 ,分別以細菌和人的成
纖維細胞為代表,那些具有篩選機制1的細胞(如:細菌、生殖細胞、癌細胞)能無限傳代,而體細胞則不能.這兩類篩選機制
背後有更深刻的原因,而細胞的癌變正是從機制2退化為機制1的過程。
Childish and slender creature ! it seemed as if a linnet had hopped to my foot and proposed to bear me on its tiny wing
一個稚氣十足,
纖弱苗條的傢伙,彷彿一隻紅雀跳到我腳邊,提議用它細小的翅膀
背負我。
In present study, single fibre recording in vivo from dorsal root on chronically compressed drg model was used. we analyzed the characters of isi series of oscillation firing of type a neurons induced by veratridine, an inhibitor of inactivation gate of sodium channel. so we can establish a basis for understanding the relationship between the inactivation gate of sodium channel and the firing pattern, so as to explore the relationship between the firing pattern and pain
本研究在大鼠
背根節慢性壓迫模型上,利用在體單
纖維記錄方法,觀察與分析na通道失活門抑制劑藜蘆堿引起受損
背根節a類神經元放電isi序列發生的變化特徵,為了解na通道失活門與放電型式的關系以及進一步探索放電時間型式與疼痛的關系奠定基礎。
Back - up pads for vulcanized fibre discs iso 15636 : 2003
硫化
纖維磨料盤用
背襯墊
The organizer will set up the booth panels back and side panels, vinyl coated plywood, white hard - board and booth number
主辦方將設立
背板和中間隔段塗有乙烯基的膠合板,白色硬質
纖維板和展間號碼牌。
The antibacterial performance is permanent, can ’ t loses because many times wash 。 therefore the bamboo fiber is favor, has the very various reason : first is the raw material for supply is insufficient, the petroleum source gradually dried up, causes dependence petroleum as the raw material of fabric to be a question ; the cotton and kapok short, because the cotton planter surface not to be able to increase causes the quantity to limit ; the lumber because the quantity is also limited, adds the afforestation policy which the upper limit chops limits cuts down to carry out but does not result in deed. but china is the big country of bamboo source, the bamboo grove surface occupies the world bamboo source 1 / 3, the bamboo lives the cycle short, the quantity big, the management uses to be low, the research and development of the bamboo fiber product has obtained very big progress and enhancement
本文首先從項目提出的
背景、研究的依據和范圍、主要經濟指標、存在的問題和建議等方面對安徽金鹿集團竹
纖維產品開發項目的可行性研究進行總體概論,本可行性研究為備選方案。然後通過從消費者消費傾向、紡織原料供需矛盾、當地竹資源的優勢、國內竹漿粕及竹
纖維技術成熟性及國內大部分成套設備先進性的優勢等方面對項目提出的
背景進行了分析,闡述了項目建設的必要性的有利性。論文通過分析世界漿粕、再生
纖維素
纖維市場以及國內漿粕、再生
纖維素
纖維市場的供需,分析未來國際和國內市場對竹
纖維和竹漿粕的市場需求。
The new kit contains a lens cleaner pump spray, dust brush, micro - fibre lens cloth and 10 pre - moistened cloths presented in a high quality fabric case with belt attachment
此新套裝包括:一個鏡頭清潔噴劑,塵刷,微細
纖維擦拭巾和10塊濕巾並附贈一個帶
背帶的高級尼龍包。
Substantia gelatinosa ( sg ; lamina ii ) of the spinal dorsal horn is the first station of the peripheral nociceptive information, which receives the termination of both non - and thin - myelinated primary afferent fibers and brainstem descending fibers, and plays an important role in peripheral nociceptive information transmission and modulation
脊髓
背角層(膠狀質) ,是接受外周傷害性信息傳入的初級門戶,既接受無髓和薄髓初級傳入
纖維的投射,也是腦干向脊髓下行投射
纖維的終止部位之一,在外周傷害性信息傳遞和整合中發揮重要作用。
The mechanism of memory and learning in the mrd performed by dopamine and its receptors was discussed. methods and results the immunohistochemistry method was used to investigate the distribution of dopamine and tryosine hydroxylase immunoreactivity in the marginal division of rat striatum using da and th polyclone antibody
但在紋狀體邊緣區中的da和th免疫陽性
纖維較多,呈密集的帶狀分佈,且有蝌蚪狀終末,沿
背腹方向走行,未見胞體。
Then we introduce the character of the atmosphere channel, which we emphasized on the atmosphere scatter, absorption and scintillation ' s effect on the laser beam. in chapter, we explain why we used cassegrain telescope to collect the optical signal at first, then the lightsource, detector, front amplifier used in optical communication has been compared to that of fiber communication, the noise including shot noise, thermal noise and background light noise has been explained here for analysis the snr and ber in the next section
在第三章介紹無線光接入系統的光收發單元,採用多孔徑卡塞格倫式的收發天線對消除減小大氣湍流影響有較大作用,針對大氣通道的特點無線光系統收發單元在光源、光探測器、前置放大電路上存在許多有別于光
纖通信的技術,同時還闡述了光接收機包括
背景噪聲的噪聲機制和接收靈敏度、誤碼率等指標,最後給出了一個整個傳送鏈路的功率預算。
Through the development of these years, shandong wanjie high - tech stork co., ltd has became a large - scale textile production base, including fibre, textile, thermoelectricity and so on. its overall assets are rmb 25 hundred millions, its annual income is rmb 30 hundred millions, it has more than three thousand people working for it. but its workers have low ability because it is developed from a small factory, which was established a few years ago
山東萬傑高科技股份有限公司經過近幾年的發展,已經成為擁有包括
纖維、紡織、熱電等多種產業在內,總資產25億元、年收入30億元、擁有3000餘名員工的大型紡織、化
纖生產基地,由於其村辦企業發展
背景,使得員工基本素質普遍較低,因此隨著企業規模的不斷擴大,現代化管理制度的引入實施以及管理幅度的增加,迫切需要提高員工的整體素質。
Rules of inspection for exportwool acrylic full cut rug
出口羊毛化
纖膠
背地毯檢驗規程
Standard specification for glass mat water - resistant gypsum backing panel
玻璃
纖維襯墊防水石膏
背板標準規范
To display the protruding breast of a woman, the designers make the waist girth appear as thin as possible to represent the high breast indirectly ; by means of the flat back of chipau they highlight the wavy shape of the breast
旗袍在交代婦女隆起的胸部時採用了避實就虛的設計手法,把整個女性身體視為一個聯系性很強的整體,通過腰肢
纖細的設計而突現胸部的豐腴;通過
背的平展而誇前胸的波型。
Study of raman scattering of plastic optical fiber
光
纖中放大的
背向自發拉曼散射的增益特性
Chapter 7. the theoretical model of rayleigh optical frequency domain reflectometry is presented, and the fully distributed microbending loss optical fiber sensor on base of this model is studied
第七章,研究了rayleigh光頻域背向散射理論模型,和基於該模型的全分散式光纖微彎損耗傳感器系統。